H01F 2003/103
Magnetic circuits with permanent magnets
Official title: {Magnetic circuits with permanent magnets}
H01F2003/103 (Magnetic circuits with permanent magnets) appears on 84 US grants and 107 published applications in this corpus.
Search patents in H01F- Granted patents
- 84
- Published applications
- 107
- Assignees
- 76
- Inventors
- 206
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 6 |
| 2003 | 3 | 0 |
| 2004 | 2 | 3 |
| 2005 | 5 | 1 |
| 2006 | 2 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 6 |
| 2009 | 1 | 6 |
| 2010 | 4 | 2 |
| 2011 | 5 | 3 |
| 2012 | 0 | 6 |
| 2013 | 5 | 4 |
| 2014 | 2 | 8 |
| 2015 | 5 | 7 |
| 2016 | 9 | 4 |
| 2017 | 3 | 7 |
| 2018 | 6 | 3 |
| 2019 | 2 | 4 |
| 2020 | 6 | 2 |
| 2021 | 2 | 7 |
| 2022 | 4 | 5 |
| 2023 | 1 | 4 |
| 2024 | 4 | 7 |
| 2025 | 4 | 8 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Inductors for direct current (DC) circuit breakers in aircraft applications11 Aug 2026US 12,706,242 B2Hamilton Sundstrand Corporation
- Magnetic integrated device10 Mar 2026US 12,573,543 B2Lite-On Electronics (Guangzhou) Limited
- Magnetic component, power conversion apparatus, and power conversion system23 Dec 2025US 12,506,400 B2TDK Corporation
- Sensor element and device for authenticating a data carrier having a spin resonance feature3 Jun 2025US 12,320,876 B2Giesecke+Devrient Currency Technology GmbH
- Magnetic core with hard ferromagnetic biasing layers and structures containing same3 Jun 2025US 12,322,695 B2Ferric Inc.
- Magnetic positioning magnet sheet and wireless charging module21 May 2026US 2026/0142505 A1Shenzhen YN Tech Co., Ltd.
- Sensor device11 Dec 2025US 2025/0378978 A1Sumitomo Heavy Industries, Ltd.
- Home appliance including inductor employing bias magnets20 Nov 2025US 2025/0357043 A1Samsung Electronics Co., Ltd.
- Magnetic core with hard ferromagnetic biasing layers and structures containing same7 Aug 2025US 2025/0253234 A1Ferric Inc.
- Method for manufacturing magnet unit and magnet unit26 Jun 2025US 2025/0210238 A1Nichia Corporation
Most cited
By later US patents
- Compact lumped constant non-reciprocal circuit element79US 5,164,687 ARenaissance Electronics Corporation · 1992
- Motionless electromagnetic generator64US 6,362,718 B12002
- Magnetic circuit, power-supplying device and power-receiving device for non-contact charging apparatus, and non-contact charging apparatus30US 9,143,041 B2Hitachi Metals, Ltd. · 2015
- System and method for moving an object25US 8,704,626 B2Correlated Magnetics Research, LLC · 2014
- Inductor23US 4,009,460 AHitachi, Ltd. · 1977